Reisen Travel offers helicopter service from suburban towns to John F. Kennedy International Airport in New York City. Each of its 10 helicopters makes between 1 comma 000 and 2 comma 000 round-trips per year. The records indicate that a helicopter that has made 1 comma 000 round-trips in the year incurs an average operating cost of $350 per round-trip, and one that has made 2 comma 000 round-trips in the year incurs an average operating cost of $300 per round-trip.
a. Using the high-low method, estimate the linear relationship y = a + bX, where y is the total annual operating cost of a helicopter and X is the number of round-trips it makes to JFK airport during the year.
b. Give examples of costs that would be included in a and in b.
c. If Reisen Travel expects each helicopter to make, on average, 1,300 round-trips in the coming year, what should its estimated operating budget for the helicopter fleet be?

answerchemical property;

among other factors, composers started writing dynamic markings in their scores because "new instruments allowed for more dynamic ranges and contrast."

dynamics allude to the loudness or softness of music. dynamics offer an approach to demonstrate articulation in sheet music. they to drive the enthusiastic substance of music through volume and force. maybe you could alter both the volume and the shading profundity on your screen at the same time. we can likewise think about the force side of elements as the quality of a note. a few notes are intended to be played delicately and gently, while others are intended to be played all the more firmly.  

some dynamics markings have a letter 'm,' which remains for mezzo, signifying 'medium.' so a mezzo piano unique stamping resembles this (mp) and intends to play medium calm, while a mezzo specialty dynamic resembles this (mf) and intends to play medium loud.